[PATCH 17/17] mm: Account for the number of times direct reclaimers get throttled

Date

Thu, 10 May 2012 14:45:10 +0100

Under significant pressure when writing back to network-backed storage,direct reclaimers may get throttled. This is expected to be ashort-lived event and the processes get woken up again but processes doget stalled. This patch counts how many times such stalling occurs. It'sup to the administrator whether to reduce these stalls by increasingmin_free_kbytes.